linux-kernel - Re: [PATCH] cifs: remove redundant check for null string pointer

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Message-ID: <CAH2r5msnkXSp3QGFqghWBfkg8xcYMt79Lf5=qz9ZBaa6ZzJ35g@mail.gmail.com>
Date:	Wed, 10 Feb 2016 18:15:15 -0600
From:	Steve French <smfrench@...il.com>
To:	Colin King <colin.king@...onical.com>
Cc:	Steve French <sfrench@...ba.org>,
	"linux-cifs@...r.kernel.org" <linux-cifs@...r.kernel.org>,
	samba-technical <samba-technical@...ts.samba.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cifs: remove redundant check for null string pointer

merged into cifs-2.6.git for-next

On Mon, Jan 25, 2016 at 10:25 AM, Colin King <colin.king@...onical.com> wrote:
> From: Colin Ian King <colin.king@...onical.com>
>
> server_RFC1001_name is declared as a RFC1001_NAME_LEN_WITH_NULL sized
> char array in struct TCP_Server_Info so the null pointer check on
> server_RFC1001_name is redundant and can be removed.  Detected with
> smatch:
>
> fs/cifs/connect.c:2982 ip_rfc1001_connect() warn: this array is probably
>   non-NULL. 'server->server_RFC1001_name'
>
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  fs/cifs/connect.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
> index 4fbd92d..a763cd3 100644
> --- a/fs/cifs/connect.c
> +++ b/fs/cifs/connect.c
> @@ -2999,8 +2999,7 @@ ip_rfc1001_connect(struct TCP_Server_Info *server)
>         if (ses_init_buf) {
>                 ses_init_buf->trailer.session_req.called_len = 32;
>
> -               if (server->server_RFC1001_name &&
> -                   server->server_RFC1001_name[0] != 0)
> +               if (server->server_RFC1001_name[0] != 0)
>                         rfc1002mangle(ses_init_buf->trailer.
>                                       session_req.called_name,
>                                       server->server_RFC1001_name,
> --
> 2.7.0.rc3
>
> --
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-- 
Thanks,

Steve